Nah, another piece of this is that rail companies have eliminated rail yards and park those super-long trains on just random tracks (at least in the LA area). They then complain about the homeless who camp on the sides of the tracks and demand that LA county do something about the camps. The homeless may provide cover for the professional thieves but the homeless aren't the thieves (and the county should indeed eliminate the homeless camps by finding them housing but given a population of people can't legally or pleasantly sleep anywhere, that population is going gravitate to area least protected and that's railroad tracks and freeways, where problem things happen - notice recent freeway fire, etc).

Rail companies go in, apprehend the homeless for trespassing and then complain that county won't prosecute them. And no, the county sensibly doesn't want to fill it's jails with vagrants just 'cause the rail companies don't park their trains where they're safe.

All this is part of the "supply chain problems" of the last few years but the thing with those is the large carriers (shippers and railroads) actually made profits by a legal situation wound-up as "our losses are your losses, our gains are ours". They cried all the way to the bank.